联通国内国外两个大市场，有利于资源要素在更大范围畅通流动，形成对全球先进资源要素的强大引力场。
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This fragmentation hurts portability. Code that performs well on one runtime may behave differently (or poorly) on another, even though it's using "standard" APIs. The complexity burden on runtime implementers is substantial, and the subtle behavioral differences create friction for developers trying to write cross-runtime code, particularly those maintaining frameworks that must be able to run efficiently across many runtime environments.
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同样的事情，也在其他公司身上发生着，而且有些细节更为戏剧性。